CN110006777A - A kind of sisal hemp leaf fiber content rapid assay methods - Google Patents
A kind of sisal hemp leaf fiber content rapid assay methods Download PDFInfo
- Publication number
- CN110006777A CN110006777A CN201910386002.1A CN201910386002A CN110006777A CN 110006777 A CN110006777 A CN 110006777A CN 201910386002 A CN201910386002 A CN 201910386002A CN 110006777 A CN110006777 A CN 110006777A
- Authority
- CN
- China
- Prior art keywords
- sample
- fiber content
- sisal hemp
- young
- modulus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
- G01N5/04—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by removing a component, e.g. by evaporation, and weighing the remainder
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention relates to fiber content analysis technical fields, are related to a kind of sisal hemp leaf fiber content rapid assay methods.Include: S1. on sisal hemp leaf to be measured, selects the lateral middle section position about 15cm~25cm, side is cut off on the position about 15cm~25cm of lateral middle section, one section long cube sisal leaves segment is obtained, as sample；S2. photoelectricity area-method is acquired and utilized by ccd image, measures the longitudinal area and lateral length of the sample；S3. the pulling force and elongation that the sample is measured by tensile testing machine, obtain the Young's modulus of sample；S4. using the functional relation between the Young's modulus and its fiber content of the sample, full leaf fiber content is represented with the fiber content of the sample, to realize the measurement to the fiber content of the sisal hemp leaf to be measured.This method studies the relationship in the blade between representative position Young's modulus and its fiber content, and the fiber content of the sisal hemp leaf to be measured is judged by Young's modulus method, and measuring method is simple, quick, environmentally friendly.
Description
Technical field
The present invention relates to fiber content analysis technical fields, quick more particularly, to a kind of sisal hemp leaf fiber content
Measuring method.
Background technique
Sisal fiber is taken from the vascular bundle fiber in sisal hemp leaf, is a kind of natural hard fiber.It is long with fiber, color
Pool is pure white, the multifrequency natures such as strong but pliable in texture, pulling force strong, acid and alkali-resistance, rub resistance, seawater corrosion resistance, mainly for the manufacture of rope,
The products such as burlap, carpet, polishing wheel are the valuable cargos of the departments such as national defence, fishery, shipping industry, industry, forest, and belonging to can be again
Production-goods source.Science, it is accurate, stablize, quickly, the sisal hemp leaf fiber content measuring method of environmental protection, can specification sisal hemp leaf
Production management, and effective reference frame can be provided for production, the scientific research of sisal industry.It is measured by sisal hemp leaf fiber content
Technical application scientifically formulates sisal hemp leaf and purchases scheme, carries out blade and fix the price according to the quality fair deal, instruct sisal hemp science pipe
Reason, improving leaf fiber content has important directive significance.
At present both at home and abroad measurement sisal hemp leaf fiber mainly use soda boiling method for degumming, Microwave-assisted firing high pressure method for degumming,
Ultrasonic method and steam explosion etc..But during obtaining sisal hemp leaf fiber content by these methods, some can generate dirt
Water has a certain impact to environment, some are complicated for operation, the period is long, is not suitable for the fibre for obtaining numb Tanaka's sisal hemp leaf in real time
Dimension hplc and the live quick price to sisal hemp leaf of purchase.
Summary of the invention
The present invention in order to overcome at least one of the drawbacks of the prior art described above, it is fast to provide a kind of sisal hemp leaf fiber content
Fast measuring method, this method can judge the fiber content of sisal hemp leaf to be measured by Young's modulus method, and process is simple, measurement
Speed is fast.
In order to solve the above technical problems, the technical solution adopted by the present invention is that: a kind of sisal hemp leaf fiber content is quickly surveyed
Determine method, comprising the following steps:
S1. on sisal hemp leaf to be measured, select the lateral middle section position about 15cm~25cm, the lateral middle section about
It cuts off side on the position 15cm~25cm, obtains one section long cube sisal leaves segment, as position representative in blade, as
Sample；
S2. photoelectricity area-method is acquired and utilized by ccd image, measures the longitudinal area and lateral length of the sample；
S3. the pulling force and elongation that the sample is measured by tensile testing machine, obtain the Young's modulus of sample；
S4. using the functional relation between the Young's modulus and its fiber content of the sample, with the fiber of the sample
Content represents full leaf fiber content, to realize the measurement to the fiber content of the sisal hemp leaf to be measured.
Further, the S2 step specifically includes: longitudinal direction and the transverse view of the sample are acquired by ccd image
Picture；When acquiring image, it is desirable that same with standard area object of reference respectively by the lateral face of the longitudinal surface of the sample and the sample
When acquire；By the area pixel number ratio of contrast standard object of reference (1cm × 1cm) and the longitudinal surface of the sample, to obtain
The longitudinal area of the sample；By the length pixel number ratio of contrast standard object of reference and the lateral face of the sample, to obtain
Obtain the length of the sample.
Further, the S3 step specifically includes: stretching the sample through tensile testing machine, obtains multiple groups pair
The elongation and pulling force answered；By least square method method, the elongation of the sample and the functional relation of pulling force are obtained；According to institute
The longitudinal area and length for measuring the sample, calculate the Young's modulus of the sample.
Further, the S4 step further include: the fibre of the sample is measured by high temperature and pressure boiling method for degumming
Dimension hplc establishes the functional relation between its Young's modulus and fiber content in conjunction with factors such as different cultivars, knife time and numb ages；
The functional relation is utilized later, and by measuring the Young's modulus of the sample, and then the fiber that the sample is calculated contains
It measures, and represents the full leaf fiber content of the sample to be tested with this.
Compared with prior art, beneficial effect is: the present invention can not for existing sisal hemp leaf fiber content measuring method
Fast speed real-time measurement measures its fiber content and represents sample to be tested with this using the representative part of sisal hemp leaf as sample
Full leaf fiber content, reduce sample size, thus quickly measure sisal hemp leaf fiber content, improve work efficiency.In addition, this
Influence of the invention by the sample of analysis sisal hemp leaf to its Young's modulus, establishes sisal hemp leaf Young's modulus and blade is fine
The intrinsic function relationship of dimension hplc realizes the measurement of sisal hemp leaf fiber content, avoids dirt of the traditional measurement method to environment
Dye.In conclusion this method judges the fiber content of sisal hemp leaf by Young's modulus method, have convenient, quick, environmentally friendly
Feature substantially increases the working efficiency of the fiber content measurement of sisal hemp leaf and avoids causing dirt to environment using chemical reagent
Dye.
Detailed description of the invention
Fig. 1 is the method for the present invention flow chart.
Fig. 2 is sisal hemp leaf fiber content Quick testing instrument schematic diagram in the embodiment of the present invention.
Fig. 3 is sesame slices piece transverse direction position stepwise schematic views in the embodiment of the present invention.
Fig. 4 is that sisal hemp leaf longitudinally cuts schematic diagram in the embodiment of the present invention.
Fig. 5 is the Young's modulus of young age fiber crops (3 knife) sample in the embodiment of the present invention 1.
Fig. 6 is the Young's modulus of numb (5 knife) sample of middle age in the embodiment of the present invention 1.
Fig. 7 is the Young's modulus of aged fiber crops (7 knife) sample in the embodiment of the present invention 1.
Specific embodiment
Attached drawing only for illustration, is not considered as limiting the invention；In order to better illustrate this embodiment, attached
Scheme certain components to have omission, zoom in or out, does not represent the size of actual product；To those skilled in the art,
The omitting of some known structures and their instructions in the attached drawings are understandable.Being given for example only property of positional relationship is described in attached drawing
Illustrate, is not considered as limiting the invention.
The present invention fast speed real-time measurement and can not pollute asking for environment for existing sisal hemp leaf fiber content measuring method
Topic, the fiber content of sisal hemp leaf to be measured is judged by Young's modulus method, as shown in Figure 1, specifically includes the following steps:
Step 1. selects the lateral middle section position about 20cm on sisal hemp leaf to be measured, the lateral middle section about
Side is cut off on the position 20cm, one section long cube sisal leaves segment is obtained, as sample.
Step 2. is acquired and is utilized photoelectricity area-method by ccd image, measures the longitudinal area and laterally length of the sample
Degree；Longitudinal direction and the landscape images of the sample are acquired by ccd image；When acquiring image, it is desirable that by the longitudinal surface of the sample
With the lateral face of the sample, acquired simultaneously with standard area object of reference (1cm × 1cm) respectively；Pass through contrast standard object of reference
With the area pixel number ratio of the longitudinal surface of the sample, to obtain the longitudinal area of the sample；Pass through contrast standard reference
The length pixel number ratio in the lateral face of object and the sample, to obtain the length of the sample.
Step 3. measures the pulling force and elongation of the sample by tensile testing machine；And then obtain the Young of the sample
Modulus；The sample is stretched through tensile testing machine, obtains the corresponding elongation of 6-10 group and pulling force；Pass through least square
Method obtains the elongation of the sample and the functional relation of pulling force；According to the longitudinal area and length of the measured sample, meter
Calculate the Young's modulus of the sample.
Step 4. is using the functional relation between the Young's modulus and sisal hemp leaf fiber content of the sample, with the examination
The fiber content of sample represents full leaf fiber content, to realize the measurement to the fiber content of the sisal hemp leaf to be measured；That is, logical
High temperature autoclaving method for degumming is crossed to measure the fiber content of the sample, in conjunction with factors such as different cultivars, knife time and numb ages, is built
Found the functional relation between its Young's modulus and fiber content；The functional relation is utilized later, by measuring the sample
Young's modulus, and then the fiber content of the sample is calculated, and the full leaf fiber content of the sample to be tested is represented with this.
Embodiment 1
1. test material
Sisal hemp leaf (is taken at the state-run Venus farm in Guangdong, Guangdong Dongfanghong farm, Guangdong five-pointed star farm etc.)
2. instrument
Electronic analytical balance (the permanent flat electronic balance in Shanghai, FB124)；Tensiometer (takes secret Instrument Ltd., ZQ- by strategy
21B-1)；Blade area measuring apparatus (Zhejiang Top, YMJ-B).
3. experimental method
It chooses at the position that 3.1 sisal hemp leafs most represent full leaf fiber content
3.1.1 the pretreatment of sisal hemp leaf
(1) selection of representative test specimens: one section (middle section) in middle part is laterally taken along sisal hemp leaf, length h is about 15-
25cm, as shown in Figure 3；Using the center in lateral face as basic point, removes two sides of blade longitudinal direction, leave the middle part of L/2, be located at
During center is indulged for it, width L/4；In secondary with it is vertical in be connected separation two sides, overall width is about L/4, specific as shown in Figure 4.It chooses
Secondary middle position confirms that the fiber of leaf fiber content closest to the whole lamina of the part contains as test specimens, by largely testing
Amount.
3.1.2 the fiber content measurement of sample
(1) fiber content calculates
The fiber content of sisal hemp leaf is calculated according to formula (1)
Wherein W is fiber content, and M is the quality of sisal hemp leaf to be measured, and m is the quality of quiet fiber after degumming.
(2) high temperature and pressure boiling method for degumming
High temperature and pressure boiling method for degumming process is as follows: first claiming the mass M of blade, is then squeezed with squeezing sugarcane machine blade
Then water is put blade in conical flask into, a certain amount of degumming agent sodium hydrate aqueous solution is poured into, and the amount of sodium hydroxide is to drain
Between the 8-15% of leaf quality；Conical flask equipped with blade and sodium hydrate aqueous solution is placed in vertical pressure steam sterilizer
In, temperature is set as between 115-140 DEG C, and reaction 0.5-1h carries out degumming, when the pressure of reactor drops to normal pressure, sampling water
The dregs of linseeds or sesame seeds are washed away, are weighed as m after drying；According to the fiber content for the blade that (1) formula is just calculated.The fiber content of sample in the present embodiment
So test.
(3) the sisal hemp leaf sample fiber content balance in different numb ages
Choose different farms, the sisal hemp in different numb ages measures the fiber of test specimens by high temperature and pressure boiling method for degumming respectively
The fiber content of content and corresponding whole lamina, as shown in table 1.As it can be seen that the sample site of different farms, different knife time sisal hemps is fine
The fiber content of dimension hplc and whole lamina is fairly close.Therefore, it is represented with the fiber content for choosing middle part of blade sample parts complete
The fiber content of blade is feasible.
1 blade sample fiber of table and whole lamina fiber content test result
The Young's modulus of the 3.2 sisal hemp leaf middle section position 20cm samples measures
3.2.1 the pretreatment of sisal hemp leaf
By the preprocess method of sisal hemp leaf described in 3.1.1, take sisal hemp leaf middle section position as sample, length h.
3.2.2 the relevant parameter measurement of sample
(1) photoelectricity area-method is acquired and utilized by ccd image, measures the longitudinal area S and lateral length of the sample
h；
(2) sisal hemp sample is stretched by tensile testing machine, measures the pulling force F and transverse extension amount h of the sample；
As shown in table 2.
The relationship of pulling force F and transverse extension increment the △ h of 11 groups, 2 Dongfanghong farm of table sisal hemp sample
3.2.3 the Young's modulus of sisal hemp sample calculates
According to the data of the pulling force F of sisal hemp sample and transverse extension increment △ h, following formula is substituted into, sisal hemp sample can be calculated to obtain
Young's modulus；
F is pulling force in formula, and h is corresponding specimen length, △ h=hi-h0(i=1,2 ...) it is corresponding under different pulling force
Elongation, S are the cross-sectional area of sample.(2) formula is transformed to
The E value of sisal hemp sample to be measured can be acquired according to least square method.By 11 groups, mentioned-above Dongfanghong farm sword
Numb sample data acquires E value, as illustrated in figs. 5-7.
3.2.4 the fiber content of sisal hemp sample calculates
According to a large amount of statistical data, an experience about sisal hemp leaf Young's modulus and its sisal fiber content is obtained
Formula:
W=3.681-6.47 × 10-5×E+1.38×10-9×E2 (4)
E is the Young's modulus for the sisal hemp leaf surveyed in formula, and W is the fiber content of sisal hemp leaf.By measuring sisal leaves
The method that the Young's modulus at piece representativeness position carrys out inverting fiber content, substantially reduces the testing time, while avoiding conventional measurement
Measure the wastewater produced pollution to environment of sisal fiber content.This method measurement sisal fiber content is a kind of quickly time saving, green
The measurement method that colour circle is protected.
Embodiment 2
1. test material
Sisal hemp leaf (is taken at the state-run Venus farm in Guangdong, Guangdong Dongfanghong farm, Guangdong five-pointed star farm etc.).
2. instrument
Tensiometer (takes secret Instrument Ltd., ZQ-21B-1 by strategy)；Blade area measuring apparatus (Zhejiang Top, YMJ-B).
3. experimental method
Based on sisal hemp leaf fiber content rapid assay methods of the invention, being specifically shown in is example (1).By said sample,
Sisal hemp whole lamina fiber content is measured according to high temperature and pressure boiling method for degumming described in 3.1.2, as a result shown in table 3, with this
As a result as the fiber content reference value of this sample.
3 high temperature and pressure boiling method for degumming of table is compared with the result that the present invention measures
Note: method for degumming refers to high temperature and pressure boiling method for degumming；Modulus method refers to Young's modulus method of the present invention.
The result shows that measuring the fiber content of sisal hemp leaf to be measured with Young's modulus method of the present invention, calculate maximum
Relative error is 7.4%.
Two methods are compared, Young's modulus method of the present invention measures the fiber content of sisal hemp leaf to be measured, passes through selection
Representative position reduces sample size；Young's modulus by measuring representative position obtains the fiber content of sisal hemp leaf, reaches
The purpose of quick measurement sisal hemp leaf fiber content, and avoid polluting the environment using chemical reagent.
The present invention by the measurement of fiber content to each position of sisal hemp leaf it is found that the lateral middle section of sisal hemp leaf about
20cm, longitudinal middle part overall width are that the fiber content at the position L/2 can represent the fiber content of full leaf.In production application,
Representative position is selected to reduce sample size；Young's modulus by measuring the sisal hemp leaf middle section position 20cm sample contains with its fiber
Comparative analysis is measured, fiber content and its Young's modulus functional relation are obtained, in production application, directly utilizes fiber content
With its Young's modulus functional relation, the Young's modulus by measuring the sisal hemp leaf middle section position 20cm sample can be obtained sisal leaves
The fiber content of piece has achieved the purpose that quick measurement sisal hemp leaf fiber content, and has avoided using chemical reagent to environment
It pollutes.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this
Made any modifications, equivalent replacements, and improvements etc., should be included in the claims in the present invention within the spirit and principle of invention
Protection scope within.
Claims (4)
1. a kind of sisal hemp leaf fiber content rapid assay methods, which comprises the following steps:
S1. on sisal hemp leaf to be measured, select the lateral middle section position about 15cm~25cm, the lateral middle section about 15cm~
Side is cut off on the position 25cm, obtains one section long cube sisal leaves segment, as position representative in blade, as sample；
S2. photoelectricity area-method is acquired and utilized by ccd image, measures the longitudinal area and lateral length of the sample；
S3. the pulling force and elongation that the sample is measured by tensile testing machine, obtain the Young's modulus of sample；
S4. using the functional relation between the Young's modulus and its fiber content of the sample, with the fiber content of the sample
Full leaf fiber content is represented, to realize the measurement to the fiber content of the sisal hemp leaf to be measured.
2. a kind of sisal hemp leaf fiber content rapid assay methods according to claim 1, which is characterized in that the S2
Step specifically includes: longitudinal direction and the landscape images of the sample are acquired by ccd image；When acquiring image, it is desirable that by the examination
The lateral face of the longitudinal surface of sample and the sample, acquires with standard area object of reference simultaneously respectively；Pass through contrast standard object of reference
With the area pixel number ratio of the longitudinal surface of the sample, to obtain the longitudinal area of the sample；Pass through contrast standard reference
The length pixel number ratio in the lateral face of object and the sample, to obtain the length of the sample.
3. a kind of sisal hemp leaf fiber content rapid assay methods according to claim 1, which is characterized in that the S3
Step specifically includes: stretching the sample through tensile testing machine, obtains the corresponding elongation of multiple groups and pulling force；Pass through minimum
Square law obtains the elongation of the sample and the functional relation of pulling force；According to the longitudinal area and length of the measured sample
Degree, calculates the Young's modulus of the sample.
4. a kind of sisal hemp leaf fiber content rapid assay methods according to claim 2 or 3, which is characterized in that described
S4 step further include: the fiber content that the sample is measured by high temperature and pressure boiling method for degumming, in conjunction with different cultivars, knife
Secondary and numb age factor, establishes the functional relation between its Young's modulus and fiber content；The functional relation is utilized later, is passed through
The Young's modulus of the sample is measured, and then the fiber content of the sample is calculated, and the sample to be tested is represented with this
Full leaf fiber content.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910386002.1A CN110006777A (en) | 2019-05-09 | 2019-05-09 | A kind of sisal hemp leaf fiber content rapid assay methods |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910386002.1A CN110006777A (en) | 2019-05-09 | 2019-05-09 | A kind of sisal hemp leaf fiber content rapid assay methods |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110006777A true CN110006777A (en) | 2019-07-12 |
Family
ID=67176446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910386002.1A Pending CN110006777A (en) | 2019-05-09 | 2019-05-09 | A kind of sisal hemp leaf fiber content rapid assay methods |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110006777A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110470540A (en) * | 2019-09-10 | 2019-11-19 | 岭南师范学院 | A kind of portable sisal hemp leaf Young's modulus rapid determination device and method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5194911A (en) * | 1990-03-08 | 1993-03-16 | Gebruder Loepfe Ag | Method and apparatus for determining the quantity of material transported within a fibre band or sliver |
| CN101477062A (en) * | 2008-12-23 | 2009-07-08 | 南京工业大学 | Method and device for identifying mesoscopic structural parameters of short fibers in rubber-based material |
| CN101806749A (en) * | 2010-04-09 | 2010-08-18 | 东华大学 | Device and method for analyzing fiber composition content in fabrics |
| CN102636381A (en) * | 2012-04-12 | 2012-08-15 | 农业部剑麻及制品质量监督检验测试中心 | Method for conducting auxiliary microwave heating and high-pressure degumming on sisal hemp leaves |
| CN104679998A (en) * | 2015-02-08 | 2015-06-03 | 浙江理工大学 | Method for modeling relationship between chemical wood pulp cellulose characteristics and paper sheet tensile strength |
| CN107655756A (en) * | 2017-09-18 | 2018-02-02 | 天津商业大学 | A kind of word bomb Modulus Test Method based on speckle printing |
| CN108627468A (en) * | 2018-04-27 | 2018-10-09 | 中国农业科学院麻类研究所 | A kind of prediction technique of feeding Boehmeria nivea leaves crude fiber content |
-
2019
- 2019-05-09 CN CN201910386002.1A patent/CN110006777A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5194911A (en) * | 1990-03-08 | 1993-03-16 | Gebruder Loepfe Ag | Method and apparatus for determining the quantity of material transported within a fibre band or sliver |
| CN101477062A (en) * | 2008-12-23 | 2009-07-08 | 南京工业大学 | Method and device for identifying mesoscopic structural parameters of short fibers in rubber-based material |
| CN101806749A (en) * | 2010-04-09 | 2010-08-18 | 东华大学 | Device and method for analyzing fiber composition content in fabrics |
| CN102636381A (en) * | 2012-04-12 | 2012-08-15 | 农业部剑麻及制品质量监督检验测试中心 | Method for conducting auxiliary microwave heating and high-pressure degumming on sisal hemp leaves |
| CN104679998A (en) * | 2015-02-08 | 2015-06-03 | 浙江理工大学 | Method for modeling relationship between chemical wood pulp cellulose characteristics and paper sheet tensile strength |
| CN107655756A (en) * | 2017-09-18 | 2018-02-02 | 天津商业大学 | A kind of word bomb Modulus Test Method based on speckle printing |
| CN108627468A (en) * | 2018-04-27 | 2018-10-09 | 中国农业科学院麻类研究所 | A kind of prediction technique of feeding Boehmeria nivea leaves crude fiber content |
Non-Patent Citations (2)
| Title |
|---|
| 吴泉英 等: "《物理实验》", 28 February 2007, 苏州大学出版社 * |
| 吴飞: "毛竹的细观结构与抗拉受力试验研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110470540A (en) * | 2019-09-10 | 2019-11-19 | 岭南师范学院 | A kind of portable sisal hemp leaf Young's modulus rapid determination device and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103745239B (en) | A kind of forest reserves measuring method based on satellite remote sensing technology | |
| CN108827855A (en) | Porous concrete pore structure parameter obtaining and analyzing method | |
| CN103411815A (en) | Method for measuring martensite content in heat rolling dual-phase steel | |
| CN110006777A (en) | A kind of sisal hemp leaf fiber content rapid assay methods | |
| CN118032673B (en) | Method and device for detecting pipe wall strength of rubber water pipe | |
| CN108414376A (en) | The not damaged Peach fruits Determination of Hardness method for establishing model of portable | |
| CN109631821A (en) | A kind of method of quick nondestructive measurement bamboo leaves area | |
| Gupta et al. | Recent trends in carcass evaluation techniques-a review | |
| Cooper et al. | Influence of marbling and maturity on the palatability of beef muscle. II. Histological considerations | |
| CN103674851A (en) | Meat quality detection method | |
| CN105335425A (en) | Fibrosis value assessing method and apparatus and fibrosis dynamic assessing method and system | |
| CN104266612A (en) | Method for conducting living body determination on boar | |
| CN105067409B (en) | A kind of method of restrained stretching amount of water during dough rheological characteristics are determined | |
| CN108709958A (en) | A kind of evaluation method of hair product compliance | |
| CN102435574B (en) | Nondestructive grading method for lamb carcass output | |
| Clarke Jr et al. | Pre-Columbian Littorina littorea in Nova Scotia | |
| RU2009136074A (en) | MEAT QUALITY CONTROL METHOD | |
| CN211347695U (en) | Portable sisal hemp blade Young modulus rapid determination device | |
| EP1750128A3 (en) | Method and device for measuring the degree of cure of a duroplastic material | |
| CN110363234A (en) | Identify the method for wheat seed processing flour Lanzhou Hand-extended Noodles production applicability | |
| Monteiro et al. | Tururi palm fibrous material (Manicaria saccifera Gaertn.) characterization | |
| Kmet et al. | Application of video image analysis in the slaughter value estimation of live Simmental bulls | |
| Castritsi-Catharios et al. | Evaluation of the quality of two commercial sponges by tensile strength measurement | |
| DE102016208597B4 (en) | Non-destructive method for determining the fiber orientation of electrically conductive random fiber materials | |
| Slósarz et al. | Assessment of intramuscular fat content in the longissimus dorsi muscle in live lambs on the basis of ultrasound image |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |